51 + Mcqs in Series Parallel Circuits Page 1 McqOptions

1.	A certain Wheatstone bridge has the following resistor values: R1 = 10 kΩ, R2 = 720 Ω, and R4 = 2.4 kΩ. The unknown resistance is_____________?
A.	24 Ω
B.	2.4 Ω
C.	300 Ω
D.	3,000 Ω
Answer» E.

Discussion

2.	A certain circuit is composed of two parallel resistors. The total resistance is 1,403 Ω. One of the resistors is 2 kΩ. The other resistor value is____________?
A.	1,403 Ω
B.	4.7 kΩ
C.	2 kΩ
D.	3,403 Ω
Answer» C. 2 kΩ

Discussion

3.	A balanced Wheatstone bridge consists of an RV of 3,500 Ω, an R2 of 200 Ω, and an R3 of 680 Ω. The value of RUNK is____________?
A.	680 Ω
B.	1,029 Ω
C.	200 Ω
D.	880 Ω
Answer» C. 200 Ω

Discussion

4.	A 6 V battery output is divided down to obtain two output voltages. Three 2.2 kΩ resistors are used to provide the two taps. The two output voltages are___________?
A.	2 V, 4 V
B.	2 V, 2 V
C.	2 V, 6 V
D.	4 V, 6 V
Answer» B. 2 V, 2 V

Discussion

5.	A 12 kΩ resistor, a 15 kΩ resistor, and a 22 kΩ resistor are in series with two 10 kΩ resistors that are in parallel. The source voltage is 75 V. Current through the 15 kΩ resistor is approximately___________?
A.	14 mA
B.	1.4 mA
C.	5 mA
D.	50 mA
Answer» C. 5 mA

Discussion

6.	A galvanometer is a meter that measures small amounts of voltage.
A.	rue
B.	alse
Answer» C.

Discussion

7.	A voltage divider consists of two 68 kΩ resistors and a 24 V source. The unknown output voltage is
A.	2 V
B.	4 V
C.	V
D.	V
Answer» B. 4 V

Discussion

8.	A 12 kΩ resistor, a 15 kΩ resistor, and a 22 kΩ resistor are in series with two 10 kΩ resistors that are in parallel. The source voltage is 75 V. Current through the 15 kΩ resistor is approximately
A.	4 mA
B.	.4 mA
C.	mA
D.	0 mA
Answer» C. mA

Discussion

9.	The higher the range setting, the less the internal resistance and the greater the load effect of the voltmeter on a circuit.
A.	rue
B.	alse
Answer» C.

Discussion

10.	A balanced Wheatstone bridge consists of an RV of 3,500 Ω, an R2 of 200 Ω, and an R3 of 680 Ω. The value of RUNK is
A.	80 Ω
B.	,029 Ω
C.	00 Ω
D.	80 Ω
Answer» C. 00 Ω

Discussion

11.	In a certain five-step R/2R ladder network, the smallest resistor value is 1 kΩ. The largest value is
A.	ndeterminable
B.	kΩ
C.	0 kΩ
D.	0 kΩ
Answer» C. 0 kΩ

Discussion

12.	A Wheatstone bridge consists of four resistors in parallel.
A.	rue
B.	alse
Answer» C.

Discussion

13.	The parallel combination of a 470 Ω resistor and a 1.2 kΩ resistor is in series with the parallel combination of three 3 kΩ resistors. A 200 V source is connected across the circuit. The resistor with the most current has a value of
A.	70 Ω or 1.2 kΩ
B.	kΩ
C.	70 Ω
D.	.2 kΩ
Answer» D. .2 kΩ

Discussion

14.	Two equal-value resistors in series will divide the source voltage equally.
A.	rue
B.	alse
Answer» B. alse

Discussion

15.	The parallel combination of a 6.8 kΩ resistor and a 10 kΩ resistor is in series with the parallel combination of a 2.2 kΩ resistor and a 1 kΩ resistor. A 100 V source is connected across the circuit. The resistor(s) with the greatest voltage drop is (are)
A.	.8 kΩ
B.	.2 kΩ
C.	.8 kΩ and 10 kΩ
D.	.2 kΩ and 1 kΩ
Answer» D. .2 kΩ and 1 kΩ

Discussion

16.	Three 10 kΩ resistors are connected in series. A 20 kΩ resistor is connected in parallel across one of the 10 kΩ resistors. The voltage source is 24 V. The total current in the circuit is
A.	00 μA
B.	mA
C.	0 mA
D.	00 μA
Answer» B. mA

Discussion

17.	A certain Wheatstone bridge has the following resistor values: R1 = 10 kΩ, R2 = 720 Ω, and R4 = 2.4 kΩ. The unknown resistance is
A.	4 Ω
B.	.4 Ω
C.	00 Ω
D.	,000 Ω
Answer» E.

Discussion

18.	The parallel combination of a 470 Ω resistor and a 1.5 kΩ resistor is in series with the parallel combination of five 1 kΩ resistors. The source voltage is 50 V. The percentage of the load current through any single 1 KΩ resistor is
A.	5 %
B.	0 %
C.	00 %
D.	0 %
Answer» C. 00 %

Discussion

19.	A resistor ladder network is a special type of series-parallel circuit.
A.	rue
B.	alse
Answer» B. alse

Discussion

20.	Using Kirchhoff's voltage law, you can find the voltages across certain parts of a series-parallel circuit.
A.	rue
B.	alse
Answer» B. alse

Discussion

21.	Two 1.2 kΩ resistors are in series and this series combination is in parallel with a 3.3 kΩ resistor. The total resistance is
A.	38 Ω
B.	,389 Ω
C.	,700 Ω
D.	80 Ω
Answer» C. ,700 Ω

Discussion

22.	A certain voltage divider consists of two 12 kΩ resistors in series. Which of the following load resistors will have the most effect on the output voltage?
A.	MΩ
B.	4 kΩ
C.	8 kΩ
D.	2 kΩ
Answer» E.

Discussion

23.	A certain voltage divider consists of three 1 kΩ resistors in series. Which of the following load resistors will have the least effect on the output voltage?
A.	MΩ
B.	00 kΩ
C.	kΩ
D.	30 Ω
Answer» B. 00 kΩ

Discussion

24.	A 6 V battery output is divided down to obtain two output voltages. Three 2.2 kΩ resistors are used to provide the two taps. The two output voltages are
A.	V, 4 V
B.	V, 2 V
C.	V, 6 V
D.	V, 6 V
Answer» B. V, 2 V

Discussion

25.	A certain circuit is composed of two parallel resistors. The total resistance is 1,403 Ω. One of the resistors is 2 kΩ. The other resistor value is
A.	,403 Ω
B.	.7 kΩ
C.	kΩ
D.	,403 Ω
Answer» C. kΩ

Discussion

26.	A voltage divider consists of two 100 kΩ resistors and a 12 V source. What will the output voltage be if a load resistor of 1 MΩ is connected to the output?
A.	.57 V
B.	V
C.	2 V
D.	.7 V
Answer» E.

Discussion

27.	Two 3.3 kΩ resistors are in series and this series combination is in parallel with a 4.7 kΩ resistor. The voltage across one of the 3.3 kΩ resistors is 12 V. The voltage across the 4.7 kΩ resistor is
A.	4 V
B.	2 V
C.	V
D.	V
Answer» B. 2 V

Discussion

28.	To derive 18 V and 12 V from a 24 V supply requires a voltage divider with three taps.
A.	rue
B.	alse
Answer» B. alse

Discussion

29.	The parallel combination of a 470 Ω resistor and a 680 Ω resistor is in series with the parallel combination of four 2 kΩ resistors. The total resistance is
A.	,650 Ω
B.	,078 Ω
C.	7.8 Ω
D.	78 Ω
Answer» E.

Discussion

30.	The parallel combination of a 470 resistor and a 1.2 k resistor is in series with the parallel combination of three 3 k resistors. A 200 V source is connected across the circuit. The resistor with the most current has a value of
A.	470 or 1.2 k
B.	3 k
C.	470
D.	1.2 k
Answer» D. 1.2 k

Discussion

31.	A 6 V battery output is divided down to obtain two output voltages. Three 2.2 k resistors are used to provide the two taps. The two output voltages are
A.	2 V, 4 V
B.	2 V, 2 V
C.	2 V, 6 V
D.	4 V, 6 V
Answer» B. 2 V, 2 V

Discussion

32.	Two 1.2 k resistors are in series and this series combination is in parallel with a 3.3 k resistor. The total resistance is
A.	138
B.	1389
C.	5700
D.	880
Answer» C. 5700

Discussion

33.	The parallel combination of a 470 resistor and a 680 resistor is in series with the parallel combination of four 2 k resistors. The total resistance is
A.	1650
B.	1078
C.	77.8
D.	778
Answer» E.

Discussion

34.	When a load resistance is removed from the output of a voltage divider circuit, the current drawn from the source
A.	decreases
B.	increases
C.	remains the same
D.	is cut off
Answer» B. increases

Discussion

35.	A Wheatstone bridge is often shown in a "diamond" configuration.
A.	1
B.
Answer» B.

Discussion

36.	The parallel combination of a 470 resistor and a 1.5 k resistor is in series with the parallel combination of five 1 k resistors. The source voltage is 50 V. The percentage of the load current through any single 1 k resistor is
A.	0.25
B.	0.2
C.	1
D.	0.5
Answer» C. 1

Discussion

37.	Using the current-divider formula, you can find the current in any branch of a series-parallel circuit.
A.	1
B.
Answer» B.

Discussion

38.	Two 3.3 k resistors are in series and this series combination is in parallel with a 4.7 k resistor. The voltage across one of the 3.3 k resistors is 12 V. The voltage across the 4.7 k resistor is
A.	24 V
B.	12 V
C.	0 V
D.	6 V
Answer» B. 12 V

Discussion

39.	A balanced Wheatstone bridge consists of an RV of 3,500 , an R2 of 200 , and an R3 of 680 . The value of RUNK is
A.	680
B.	1029
C.	200
D.	880
Answer» C. 200

Discussion

40.	A certain voltage divider consists of three 1 k resistors in series. Which of the following load resistors will have the least effect on the output voltage?
A.	1 M
B.	100 k
C.	1 k
D.	330
Answer» B. 100 k

Discussion

41.	A certain Wheatstone bridge has the following resistor values: R1 = 10 k, R2 = 720 , and R4 = 2.4 k. The unknown resistance is
A.	24
B.	2.4
C.	300
D.	3000
Answer» E.

Discussion

42.	Two 1.2 k resistors are in series and this series combination is in parallel with a 3.3 k resistor. The total resistance is
A.	138
B.	1389
C.	5700
D.	880
Answer» C. 5700

Discussion

43.	A certain voltage divider consists of two 12 k resistors in series. Which of the following load resistors will have the most effect on the output voltage?
A.	1 M
B.	24 k
C.	18 k
D.	12 k
Answer» E.

Discussion

44.	The internal resistance of a 30,000 ohm/volt voltmeter set on its 50 V range is
A.	15000
B.	150000
C.	1500000
D.	15000000
Answer» D. 15000000

Discussion

45.	A smaller-value load resistor will cause the output voltage to change more than a larger-value one.
A.	1
B.
C.	1
D.
Answer» B.

Discussion

46.	The output of a certain voltage divider is 12 V with no load. When a load is connected, the output voltage
A.	decreases
B.	increases
C.	remains the same
D.	becomes zero
Answer» B. increases

Discussion

47.	Three 10 k resistors are connected in series. A 20 k resistor is connected in parallel across one of the 10 k resistors. The voltage source is 24 V. The total current in the circuit is
A.	900 A
B.	9 mA
C.	90 mA
D.	800 A
Answer» B. 9 mA

Discussion

48.	A voltage divider consists of two 100 k resistors and a 12 V source. What will the output voltage be if a load resistor of 1 M is connected to the output?
A.	0.57 V
B.	6 V
C.	12 V
D.	5.7 V
Answer» E.

Discussion

49.	A voltage divider consists of two 68 k resistors and a 24 V source. The unknown output voltage is
A.	12 V
B.	24 V
C.	0 V
D.	6 V
Answer» B. 24 V

Discussion

50.	A 12 k resistor, a 15 k resistor, and a 22 k resistor are in series with two 10 k resistors that are in parallel. The source voltage is 75 V. Current through the 15 k resistor is approximately
A.	14 mA
B.	1.4 mA
C.	5 mA
D.	50 mA
Answer» C. 5 mA

Discussion

Explore topic-wise MCQs in Electrical Engineering.

A certain Wheatstone bridge has the following resistor values: R1 = 10 kΩ, R2 = 720 Ω, and R4 = 2.4 kΩ. The unknown resistance is_____________?

A certain circuit is composed of two parallel resistors. The total resistance is 1,403 Ω. One of the resistors is 2 kΩ. The other resistor value is____________?

A balanced Wheatstone bridge consists of an RV of 3,500 Ω, an R2 of 200 Ω, and an R3 of 680 Ω. The value of RUNK is____________?

A 6 V battery output is divided down to obtain two output voltages. Three 2.2 kΩ resistors are used to provide the two taps. The two output voltages are___________?

A 12 kΩ resistor, a 15 kΩ resistor, and a 22 kΩ resistor are in series with two 10 kΩ resistors that are in parallel. The source voltage is 75 V. Current through the 15 kΩ resistor is approximately___________?

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A balanced Wheatstone bridge consists of an RV of 3,500 Ω, an R2 of 200 Ω, and an R3 of 680 Ω. The value of RUNK is

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Two equal-value resistors in series will divide the source voltage equally.

The parallel combination of a 6.8 kΩ resistor and a 10 kΩ resistor is in series with the parallel combination of a 2.2 kΩ resistor and a 1 kΩ resistor. A 100 V source is connected across the circuit. The resistor(s) with the greatest voltage drop is (are)

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A certain Wheatstone bridge has the following resistor values: R1 = 10 kΩ, R2 = 720 Ω, and R4 = 2.4 kΩ. The unknown resistance is

The parallel combination of a 470 Ω resistor and a 1.5 kΩ resistor is in series with the parallel combination of five 1 kΩ resistors. The source voltage is 50 V. The percentage of the load current through any single 1 KΩ resistor is

A resistor ladder network is a special type of series-parallel circuit.

Using Kirchhoff's voltage law, you can find the voltages across certain parts of a series-parallel circuit.

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A certain voltage divider consists of three 1 kΩ resistors in series. Which of the following load resistors will have the least effect on the output voltage?

A 6 V battery output is divided down to obtain two output voltages. Three 2.2 kΩ resistors are used to provide the two taps. The two output voltages are

A certain circuit is composed of two parallel resistors. The total resistance is 1,403 Ω. One of the resistors is 2 kΩ. The other resistor value is

A voltage divider consists of two 100 kΩ resistors and a 12 V source. What will the output voltage be if a load resistor of 1 MΩ is connected to the output?

Two 3.3 kΩ resistors are in series and this series combination is in parallel with a 4.7 kΩ resistor. The voltage across one of the 3.3 kΩ resistors is 12 V. The voltage across the 4.7 kΩ resistor is

To derive 18 V and 12 V from a 24 V supply requires a voltage divider with three taps.

The parallel combination of a 470 Ω resistor and a 680 Ω resistor is in series with the parallel combination of four 2 kΩ resistors. The total resistance is

The parallel combination of a 470 resistor and a 1.2 k resistor is in series with the parallel combination of three 3 k resistors. A 200 V source is connected across the circuit. The resistor with the most current has a value of

A 6 V battery output is divided down to obtain two output voltages. Three 2.2 k resistors are used to provide the two taps. The two output voltages are

Two 1.2 k resistors are in series and this series combination is in parallel with a 3.3 k resistor. The total resistance is

The parallel combination of a 470 resistor and a 680 resistor is in series with the parallel combination of four 2 k resistors. The total resistance is

When a load resistance is removed from the output of a voltage divider circuit, the current drawn from the source

A Wheatstone bridge is often shown in a "diamond" configuration.

The parallel combination of a 470 resistor and a 1.5 k resistor is in series with the parallel combination of five 1 k resistors. The source voltage is 50 V. The percentage of the load current through any single 1 k resistor is

Using the current-divider formula, you can find the current in any branch of a series-parallel circuit.

Two 3.3 k resistors are in series and this series combination is in parallel with a 4.7 k resistor. The voltage across one of the 3.3 k resistors is 12 V. The voltage across the 4.7 k resistor is

A balanced Wheatstone bridge consists of an RV of 3,500 , an R2 of 200 , and an R3 of 680 . The value of RUNK is

A certain voltage divider consists of three 1 k resistors in series. Which of the following load resistors will have the least effect on the output voltage?

A certain Wheatstone bridge has the following resistor values: R1 = 10 k, R2 = 720 , and R4 = 2.4 k. The unknown resistance is

Two 1.2 k resistors are in series and this series combination is in parallel with a 3.3 k resistor. The total resistance is

A certain voltage divider consists of two 12 k resistors in series. Which of the following load resistors will have the most effect on the output voltage?

The internal resistance of a 30,000 ohm/volt voltmeter set on its 50 V range is

A smaller-value load resistor will cause the output voltage to change more than a larger-value one.

The output of a certain voltage divider is 12 V with no load. When a load is connected, the output voltage

Three 10 k resistors are connected in series. A 20 k resistor is connected in parallel across one of the 10 k resistors. The voltage source is 24 V. The total current in the circuit is

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